Grading-machine.



G. SKIDMORE. GRADING MACHINE. APPLIOATION FILE-D SEPT. 25, 1908.

Patented Aug. 3, 1909 a M 3 0 AWM G. SKIDMORE.

GRADING MACHINE. I IAPPLIOATION FILED SEPT, 25, 1908.

930,320. Patentd Aug. 3, 1909.

2 SHEETS-SHEET 2.

ANDREW. a. mwmn c0. PNOYO-UTNOGRAPMERS. WASHINR'ION. IL :2.

nNrrEn STATES rA'rENr orEroE.

CHARLES SKIDMORE, 0E HOMER, NEBRASKA, AssiGNoE or EOETY-NINEONE-HUNDREDTHS TO JOHN EVANS EUMsEY, or rnUEsToN coUNTY,NEBEAsKA.

GRADING-MACHINE.

Specificationof Letters Patent.

Patented Au 3, 1909.

To all whom it may concern:

Be it known that 1, CHARLES SKIDMORE, a citizen of the United States,residing at Homer, in the county of Dakota and State of Nebraska, haveinvented new and useful Improvements in Grading-Machines, of which thefollowing is a specification.

The invention relates to an improvement in grading machines, and isparticularly directed to a machine of this type in which the gradingoperation is effectively performed with the minimum propelling power-The main object of the present invention is the provision of a gradingmachine em bodying a wheeled frame and carrying a grading or excavatingwheel arranged 0bliquely to the surface over which it is travel v ingand adapted to pick up the material on the line of excavationv andelevate and discharge it at a point remote from suchlline, the mechanismincluding means whereby the cutting depth of the excavating wheel may beconveniently controlled at the will of the operator.

The invention will be described in the following specification,reference being had particularly to the accompanying drawings, in whichFigure l'is a perspective view of my improved grading machine. Fig. 2 isa plan of the same. Fig. 3 is a section online 3-3'of Fig. 1. Fig. 4 isa section on line 4;-4. of Fi 1. i Tteferring particularly to theaccompanying drawings, wherein is illustrated thepreferred form ofdetails of the present invention, my improved grader comprises a mainframe 1 including spaced parallel bars 2 and 3 extending longitudinallyof the machine;

The forward ends of the bars 2 and 3. are

, connected to an auxiliary frame 4,. prefers ably comprising a singlelength of substan tial bar material bent into U-form to pro vide aforward cross bar 5. Theauxiliary frame is connected to the main frameso that the cross bar 5 is arranged below and approximately in verticalalinement with the forward ends of the bars 2 and 3, the side bars ofthe auxiliary frame extending upwardly from the cross bar to the ends ofthe bars 2 and 3 and being then extended rearwardly for a short distancein contact with said bars 2 and 3, bolts orrivets serving to secure theauxiliary and main frame to gether at such points of contact. Beyondthe'points of connection the side bars 6 and 7 of the auxiliary frameare deflected from the plane of the bars 2 and 3 the side bar 6extendingdownwardly and outwardly relative to thebar 3, while the sidebar 7 extends downwardly and outwardly relative to the bar 2. The bar 6terminates some distance in advance of the central point of thebar 3,while the bar 7 extends throughout the length of the main frame and atthe rear end thereof is connected to the lower end of a standard 8,being, in rear of the standard, projected laterally transverse the planeof the main frame, as at 9, and connected to the rear end of the bar 3.The bar 3 inclines downwardly and rearwardly from its connection withthe auxiliary frame and at the rear end'is' bent sharply downward andlaterally' to provide for its connection with the bar 7, as )reviouslydescribed. The rear end of the ar 2 is connected to the upper end. ofthestandard 8, and to said standard and the transverse portion 9 ofthebar 7, there is 'connected a platform frame 10 comprising suitablemetallic strips on which there is supported a platform 11 forconvenience of the operator.

The central portions of the bars 2 and 7 are twisted from the normalplanes of the bars to provide diagonally disposed parallel bearingsections 12, in which is mounted a bearing bolt 13 to support thegrading wheel, as clearly shown in Fig. 3. The bearing sections '12 ofthe respective bars are provided with suitable bearingfor the receptionof the b0lt'13, and said bolt is fixed against downward movement throughthe medium of a nut'lt secured upon the upper end of the bolt'andbearing on a washer 15 resting upon the upper surface of the bearingsection. of the bar 2. As the bars 2 and 7 are arrangedin'diagonalialinement, it is obvious that the bearingbolt inclinesoutwardly and downwardly from the vertical when in position.

The grading wheel comprises a sleeve-like member '16 arranged to fit thebearing bolt and having upper and lower lateral flanges 17 and 18. Anannular blade member 19 is provided having its outer peripheral edgesharpened to provide a cutting edge, as at 20. The blade adjacent theinner edge is provided with a depending flange 21 from which brace rods22 extend to the upper and lower flanges 17 and 18 of the sleeve memher,whereby the cutting band and sleeveare secured .together. A deflectingtruncated cone-shaped member 23 is secured to the upper surface of thecutting blade, said member being of sh ell-like form open at the lowerend with the lower edge resting upon the upper surface of the bladebeyond the inner edge of said blade. The upper end of the deflectingmember is formed with. an opening to receive the bearing bolt 13, andlock nuts 24 are arranged to engage the bolt to secure the deflectingmember in place.

Supporting arms 25 and 26 project respectively from themain frame andfrom the standard 8, the former being connected to both bars ,2 and 3and being beyond said bars projected forwardly and downwardly,terminating in advance of the central point of the main frame and aboveand inwardly beyond the cutting edge of the blade 19. The arm 26.terminates rearwardly beyond and in diagonal relation to the terminalof the arm 25, said arms supporting at their terminals ,a shaft 27 onwhich, adjacent the lowermost arm 25, there is fixed a disk 28. The disk28, hereinafter termed the discharging disk, is so arranged that itsedge is in frictional contact with the upper surface of the blade 19,and by virtue of the arrange ment of thearms 25 and 26 the disk 28operates in a plane at an angleto the plane of the blade 19, thusserving to direct the material carried onsaid blade during thegrading operation off the edge of the blade at the highest point of the latter, aswill be obvious from Fig. .3 of the drawings.

Pivotally connected to the terminal of the arm 6 is a disk frame 29 inwhich is mounted a cutting disk 30. The disk 30 operates in a planeoblique to thevertical plane of the machine and has its operativeedgedisposed immediately adjacent the lowermost por tion of the blade19, so that the disk 30 operates' as a vertical cutting blade inconjunction with the approximately horizontal cutting operation of theblade 19. The rear end. of the frame 29 is mounted for movement ashereinafter described, whereby to adjust the cutting depth of the disk30.

The cross bar 5 of the auxiliary frame is provided with a removableforwardly extending bracket arm 31 terminally )rovided with a dependingportion forming a king bolt to' engage the forward axle 32- on which ismounted the ground wheels 33, any suitable means being arranged on theaxle to provide for the connection thereto of the draft ani mals. Theright hand rear ground wheel 34, or that wheel on the side of themachine carrying the discharging disk 28 is mounted upon a crank axle 35supported in bearings fixed in the platform frame 10, the inner end ofthe axle having a forwardly projecting arm 36, as shown in Fig. 2. Theleft hand ground wheel 37 is mounted upon the lower end of a lever 38,which is pivotally connected to the main frame at the juncture of thebars 3 and 7. Secured to and rising from the main frame at the junctureof the bars 3 and 7 is a supporting loop 39, on each side bar of whichthere is secured an outwardly extending L-shaped bracket 46--4l theformer projecting outwardly from the loop 39, while the latter projectsinwardly therefrom relative to the main frame. Mounted in the uprightsof the respective brackets and the side lHll'S of the loop is a shaft 42on which there is independently mounted three drums 13, 4-4, and 45, thedrum 43 being mounted between the bracket and the loop, the drum 4-4being mounted between the side bars of the loop and the drum 45 beingmounted between the loop and the bracket 4.1. The rear end of thesu'JpOrting frame 29, the forwardly proan: and the free end of the lever38 are arranged to :ilinc vertically with the respective drums 4.5, l-l, and 43, and said parts arc connected to the respective drums bychains i6, 47. and -13. The drums are each provided with ratchet bands49, and loosely mounted on the shaft 42, adjacent each drum, is anoperating handle having a pawl to engage the teeth of the band, wherebyany particular drum in ay be operated to take up the connected chain,any simple form of pawl and ratchet mechanism being provided to preventreturn movement of the drums at will.

It will be obvious that by adjusting the chain 46 on the drum 45 thecutting depth of the disk 30 may be regulated at will, while adjustmentof the chain 47 on the drum =11 will turn the crank axle of the rearwheel 34- and thereby elevate or depress the right hand side of themachine with the effect to regulate the angular position of theexcavating wheel relative to the surface over which it is traveling.Adjustment of the chain 48 on the drum 43 will elevate or depress thewheel carrying end of the lever 38, and thereby regulate the cuttingdepth of the excavating wheel.

The operation of the grader will be appar ent from the above descriptiontaken in conneetion with the drawing, it being understood that thematerial cut by the blade 19 and disk 30 will be elevated in the travelof the wheel and scraped therefrom by the disk 28 for discharge.

Having thus described the invention what is claimed as new, is

1. A grading machine comprising a main frame, an excavating wheeloperating in a plane oblique to the plane of the main frame, and arotatable discharging disk frictioi'ially engaging the grading wheel atthe highest point of the latter.

2. A grading machine comprising a main frame, an excavating wheeloperating in. a plane oblique to the plane of the main frame,

jecting arm 36 of the crank axle of the latter, anr

wheel at the highest point means for adjusting the main frame to varythe inclination of the excavating Wheel with relation to the surfaceover which it is traveling.

3. A grading machine comprising a main frame, an excavating Wheeloperating in a plane oblique to the plane of the main frame, a rotatabledischarging disk frictionally engaging the grading Wheel at the highestpoint of the latter, and means for adjusting the main frame to vary thecutting depth of the excavating wheel.

4. A grading machine comprising a wheeled frame, an excavating wheelmounted for movement in a plane oblique to the main frame, means foradjusting one of the wheels of the frame to vary the angular relation ofthe excavating Wheel to the surface over which it is traveling, andmeans for adjusting another wheel of the frame'for varying the cuttingdepthof the excavating wheel.

5. A grading machine comprising a main gaging the grading a rotatabledischarging disk frictionally enl frame, an excavating wheel operatingin a plane oblique to the main frame, a rotatable discharging disk infrictional contact with the wheel and operating adjacent the highestpoint of the latter, and a cutting disk carried by the main frame. andoperating adjacent the lowest or cutting point of the wheel.

6. A grading machine comprising a main frame, an excavating wheeloperating in a plane oblique to the main frame, a rotatable dischargingdisk in frictional contact with the wheel and operating adjacent thehighest pointof the latter, a cutting disk carried by the main frame andoperating adjacent the lowest or cutting point of the wheel, and meansfor adjusting the depth of the cutting disk relative to the excavatingwheel.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES SKIDMORE.

Witnesses AUDREY ALLAWAY, NANNIE ALLAWAY.

